Fuel and Engines
Chevy Blazer
Chevy S-10
Chevy Blazer S-10

Where is 92 s10 blazer fuel injector location?

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Wiki User
September 30, 2007 1:08PM

If this is the 4.3L Vortec V6, it uses a Central Fuel Injection type system. Unbolt the top half of the intake manifold, and it opens up like a clamshell. Inside will be a black box with two metal fuel pipes, some wires, and six plastic tubes. The metal pipes bring fuel to the injector (black box) and back to the tank. The plastic tubes go to 'poppet nozzles' which spray at each cylinder's air intake runner.

If any of the plastic tubes or nozzles are damaged, the vehicle will run very very badly and the entire injector and set of nozzles should be replaced. The most difficult parts of the process are shelling out the cash for the part, and cleaning the old gasket material.


The only 'safe' method I know of to clean this system without risk of damaging the tubes and nozzles with incompatible chemicals is to use the MotorVac CarbonClean machine and MotorVac cleaning solution. The machine should be run for 15 minutes, no longer, and within 5 minutes it is necessary to reconnect the normal fuel system then drive the truck for at least 10 minutes.

If the vehicle has recently had a misfire or EGR fault, this should be done three times to decarbonize the valves and combustion chambers.

If the truck has recently been switched to a gasoline with ethanol content, the 15 minutes cycle should be performed at least twice to clean the injector and nozzles.

For maintenance, one 15 minute cycle every 2 years or 30,000 miles is ideal, about half as often if using 'top-tier' fuel, or twice as often if a majority of driving trips are less than 12 minutes.

Some but not all fuel tank additives can damage your fuel injection unit's hoses and nozzles. Before using any additive, research whether or not it has been specifically tested for this fuel injection system.